SchemaConstraintNode class

The ConstraintNode type is provided to support usecases in which a node in a structured data graph is described with properties which appear to describe a single entity, but are being used in a situation where they serve a more abstract purpose. A SchemaConstraintNode can be described using SchemaconstraintProperty and SchemanumConstraints. These constraint properties can serve a variety of purposes, and their values may sometimes be understood to indicate sets of possible values rather than single, exact and specific values. See https://schema.org/ConstraintNode

Inheritance
Implementers

Constructors

SchemaConstraintNode({String? additionalType, String? alternateName, dynamic description, String? disambiguatingDescription, dynamic identifier, dynamic image, dynamic mainEntityOfPage, String? name, dynamic owner, SchemaAction? potentialAction, String? sameAs, dynamic subjectOf, String? url, dynamic constraintProperty, int? numConstraints})
Create a new instance of SchemaConstraintNode

Properties

additionalType ↔ String?
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getter/setter pairinherited
alternateName ↔ String?
An alias for the item.
getter/setter pairinherited
constraintProperty ↔ dynamic
Indicates a property used as a constraint. For example, in the definition of a SchemaStatisticalVariable. The value is a property, either from within Schema.org or from other compatible (e.g. RDF) systems such as DataCommons.org or Wikidata.org.
getter/setter pair
description ↔ dynamic
A description of the item.
getter/setter pairinherited
disambiguatingDescription ↔ String?
A sub property of description. A short description of the item used to disambiguate from other, similar items. Information from other properties (in particular, name) may be necessary for the description to be useful for disambiguation.
getter/setter pairinherited
hashCode → int
The hash code for this object.
no setterinherited
identifier ↔ dynamic
The identifier property represents any kind of identifier for any kind of SchemaThing, such as ISBNs, GTIN codes, UUIDs etc. Schema.org provides dedicated properties for representing many of these, either as textual strings or as URL (URI) links. See background notes for more details.
getter/setter pairinherited
image ↔ dynamic
An image of the item. This can be a SchemaURL or a fully described SchemaImageObject.
getter/setter pairinherited
mainEntityOfPage ↔ dynamic
Indicates a page (or other CreativeWork) for which this thing is the main entity being described. See background notes for details.
getter/setter pairinherited
name ↔ String?
The name of the item.
getter/setter pairinherited
numConstraints ↔ int?
Indicates the number of constraints property values defined for a particular SchemaConstraintNode such as SchemaStatisticalVariable. This helps applications understand if they have access to a sufficiently complete description of a SchemaStatisticalVariable or other construct that is defined using properties on template-style nodes.
getter/setter pair
owner ↔ dynamic
A person or organization who owns this Thing.
getter/setter pairinherited
potentialAction ↔ SchemaAction?
Indicates a potential Action, which describes an idealized action in which this thing would play an 'object' role.
getter/setter pairinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
sameAs ↔ String?
URL of a reference Web page that unambiguously indicates the item's identity. E.g. the URL of the item's Wikipedia page, Wikidata entry, or official website.
getter/setter pairinherited
subjectOf ↔ dynamic
A CreativeWork or Event about this Thing.
getter/setter pairinherited
url ↔ String?
URL of the item.
getter/setter pairinherited

Methods

noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toJsonLd() → Map<String, dynamic>
Serialize SchemaConstraintNode to JSON-LD
override
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited